From 58e38ff1f82b19ee529f0f5abe74a2c03c204dfe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Wed, 24 Jul 2024 17:36:15 +0200
Subject: [PATCH] start: Add a comment explaining the sparc64 stack bias.

---
 lib/std/start.zig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/std/start.zig b/lib/std/start.zig
index 21baacc764..336526b7b4 100644
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@@ -379,7 +379,8 @@ fn _start() callconv(.Naked) noreturn {
             \\ jg %[posixCallMainAndExit]
             ,
             .sparc64 =>
-            // argc is stored after a register window (16 registers) plus stack bias
+            // argc is stored after a register window (16 registers * 8 bytes) plus the stack bias
+            // (2047 bytes).
             \\ mov %%g0, %%i6
             \\ add %%o6, 2175, %%l0
             \\ mov %%l0, %%o0